hush: teach getopts to set/unset OPTARG

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 34 insertions, 0 deletions

diff --git a/shell/ash_test/ash-getopts/getopt_optarg.right b/shell/ash_test/ash-getopts/getopt_optarg.right
new file mode 100644
index 000000000..dff28de57
--- /dev/null
+++ b/shell/ash_test/ash-getopts/getopt_optarg.right
@@ -0,0 +1,18 @@
+*** no OPTIND, optstring:'w:et' args:-q -w e -r -t -y
+Illegal option -q
+var:'?' OPTIND:2 OPTARG:''
+var:'w' OPTIND:4 OPTARG:'e'
+Illegal option -r
+var:'?' OPTIND:5 OPTARG:''
+var:'t' OPTIND:6 OPTARG:''
+Illegal option -y
+var:'?' OPTIND:7 OPTARG:''
+exited: var:'?' OPTIND:7 OPTARG:''
+*** OPTIND=0, optstring:'w:et' args:-w 1 -w2 -w -e -e -t -t
+var:'w' OPTIND:3 OPTARG:'1'
+var:'w' OPTIND:4 OPTARG:'2'
+var:'w' OPTIND:6 OPTARG:'-e'
+var:'e' OPTIND:7 OPTARG:''
+var:'t' OPTIND:8 OPTARG:''
+var:'t' OPTIND:9 OPTARG:''
+exited: var:'?' OPTIND:9 OPTARG:''
diff --git a/shell/ash_test/ash-getopts/getopt_optarg.tests b/shell/ash_test/ash-getopts/getopt_optarg.tests
new file mode 100755
index 000000000..b346284f0
--- /dev/null
+++ b/shell/ash_test/ash-getopts/getopt_optarg.tests
@@ -0,0 +1,16 @@
+set -- -q -w e -r -t -y
+echo "*** no OPTIND, optstring:'w:et' args:$*"
+var=QWERTY
+OPTARG=ASDFGH
+while getopts "w:et" var; do
+        echo "var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'"
+done
+echo "exited: var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'"
+
+set -- -w 1 -w2 -w -e -e -t -t
+echo "*** OPTIND=0, optstring:'w:et' args:$*"
+OPTIND=0
+while getopts "w:et" var; do
+        echo "var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'"
+done
+echo "exited: var:'$var' OPTIND:$OPTIND OPTARG:'$OPTARG'"